Extraction equipment and extraction process for functional tea extract

Abstract

The invention relates to the technical field of tea extraction equipment, in particular to functional tea extract extraction equipment and an extraction process thereof.The functional tea extract extraction equipment comprises a support, a concentration tank, a soaking tank, a blocking net mechanism, a transverse plate, a shaking mechanism, a filter net and a pressure control mechanism, the support is fixed to the ground, and an inclined plane is arranged at the top end of the support; the concentration tank is fixedly connected with the inclined surface of the bracket, and the top end of the concentration tank is fixedly connected with a first tank cover. The concentration tank and the soaking tank are communicated in an overlapped manner, so that the conveying path of extract liquid is shortened, the impurity content of the extract liquid can be prevented from being increased in the conveying process, the total occupied area of the extraction equipment can be reduced, the cost is effectively reduced, tea leaves in the stop net mechanism can be shaken through the shaking mechanism, and the tea leaves can be conveniently extracted. The tea leaves are in full contact with an organic solvent, and the cleaning module synchronously cleans the filter screen when the stirring module juggles the tea leaves, so that smooth circulation of a leaching solution is ensured, and the quality of an extract is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tea extraction equipment, in particular to an extraction equipment for functional tea extract and an extraction process thereof. Background Art

[0002] Tea extract is the active ingredient extracted from tea leaves, mainly including tea polyphenols (catechins), caffeine, aromatic oils, water, minerals, pigments, carbohydrates, proteins, amino acids, vitamins, etc. The extraction methods of tea extract are generally divided into water immersion method, organic solvent extraction method, ultrasonic extraction method and reflux extraction method.

[0003] At present, the organic solvent extraction method has a high cost-effectiveness and is widely used. During the extraction, the tea leaves need to be soaked in an organic solvent (such as ethanol). After the soaking is completed, the pure extract needs to be concentrated to obtain the pure extract, and finally the extract is processed through drying and other processes. The existing extraction equipment often divides the soaking and concentration into two areas, which is not only costly and occupies a large area, but also the extract after soaking is transported through a long tube, which is sometimes more likely to be mixed with impurities, affecting the quality of the extract. In addition, when the tea leaves are left to soak, some of the tea leaves may not be fully in contact with the organic solvent due to the accumulation of tea leaves. Increasing the stirring can easily cause the tea leaves to get stuck in the stirring mechanism, affecting the normal operation of the equipment, and stirring the tea leaves is inconvenient to clean afterwards. Therefore, a device is needed to solve the problem. Summary of the Invention

[0004] In order to solve the problems of large floor space occupation, high cost and insufficient contact between tea leaves and organic solvents in the existing process, the present invention provides an extraction device for functional tea extract and an extraction process thereof.

[0005] The present invention provides an extraction device for functional tea extract and an extraction process thereof using the following technical solutions: An extraction device for functional tea extract, comprising: A bracket is fixed to the ground and has an inclined surface at its top; A concentration tank, which is fixedly connected to the inclined surface of the bracket, and a first tank cover is fixedly connected to the top of the concentration tank; A soaking tank, which is fixedly connected to the top of the first tank cover and is fixedly connected to the concentration tank via a connecting pipe; A screen mechanism, which is suspended in the soaking tank; a transverse plate, which is horizontally fixedly connected to the top end of the connecting pipe; A shaking mechanism is provided on the transverse plate, the shaking mechanism comprising a toggle module for shaking the screen blocking mechanism and a cleaning module linked with the toggle module to ensure that the filter screen is unobstructed; a filter screen detachably connected to the connecting pipe; The pressure control mechanism is arranged outside the concentration tank and communicated with the concentration tank.

[0006] By adopting the above technical solution, the concentration tank and the soaking tank are superimposed and connected to shorten the transportation path of the extract, which not only avoids the increase of impurity content in the extract during transportation, but also reduces the overall footprint of the extraction equipment, effectively reducing costs. The tea leaves are blocked in the net mechanism by the blocking mechanism, which is convenient for subsequent cleaning, and the tea leaves in the net mechanism can be shaken by the shaking mechanism, so that the tea leaves are fully in contact with the organic solvent. When the module is tossed to shake the tea, the cleaning module simultaneously cleans the filter to ensure the smooth flow of the extract and improve the quality of the extract.

[0007] Optionally, the top of the soaking tank is detachably connected to a second tank cover with a slot for accommodating the entry and exit of the baffle mechanism. A port cover is rotatably hinged outside the slot, and the second tank cover is also provided with a vertical direct pipe.

[0008] By adopting the above technical solution, the vertical direct pipe is used to facilitate the addition of organic solvents, the slots are used to facilitate the entry of tea leaves and the removal of the entire tea leaves after soaking, which is convenient for cleaning.

[0009] Optionally, the net blocking mechanism includes a gathering edge ring, an elastic rope, a net and a gathering head, the elastic rope is partially gathered in the gathering edge ring, and its two ends pass through the gathering head, the gathering head is arranged on the outside of the port cover, and the net is arranged on the inside of the gathering edge ring.

[0010] By adopting the above technical solution, the tea leaves are covered with a net to prevent the tea leaves from remaining at the bottom of the soaking tank after the extraction liquid is drained, which facilitates subsequent cleaning and prevents the tea leaves from blocking the connecting pipe.

[0011] Optionally, the toggle module includes a waterproof cover, a motor and a rotating rod, the waterproof cover is fixedly connected to the bottom end of the horizontal plate, the motor is fixedly connected inside the waterproof cover, the rotating rod passes through the horizontal plate and the waterproof cover and is rotatably connected to the two, a gear set is provided between the motor output shaft and the rotating rod, the top end of the rotating rod is fixedly connected to an L-shaped rod, at least two bottom sleeves are fixedly connected to the bottom wall of the immersion tank, a movable rod is movably connected to the bottom sleeve, the top end of the movable rod is rotatably hinged with a support plate, the bottom end of the support plate is integrally fixedly connected to a special-shaped block abutting the L-shaped rod, and the top end of the support plate is in contact with the net.

[0012] By adopting the above technical solution, the motor is used to provide power to drive the rotating rod to rotate, so that the L-shaped rod moves along the special-shaped block, causing the support plate to fluctuate continuously, shaking the net, so that the tea leaves are fully in contact with the organic solvent, thereby improving the quality of the extract.

[0013] Optionally, the cleaning module includes a scraper, the scraper is fixedly connected to the outer wall of the bottom of the rotating rod, and the bottom of the scraper is in contact with the filter.

[0014] By adopting the above technical solution, the rotation of the rotating rod drives the scraper to continuously scrape the surface of the filter, thereby preventing some fine tea residues from accumulating and clogging the filter.

[0015] Optionally, a control valve is detachably connected to the connecting pipe, and the position of the control valve is lower than the filter screen.

[0016] By adopting the above technical solution, the discharge of the leaching liquid is controlled by using a control valve.

[0017] Optionally, a drain port and a bottom pipe are fixedly connected to the outer wall of the concentration tank, and the bottom pipe is connected to the outer bottom of the concentration tank.

[0018] By adopting the above technical solution, the concentrated tea extract is discharged through the drain port and the bottom pipe. The two channels are more convenient and can effectively prevent a single channel from being blocked and the device from being unable to work.

[0019] Optionally, the pressure control mechanism includes a vacuum pump, a steam regulating pressure reducing valve and a connecting pipe. The vacuum pump is fixedly connected to the bracket. The connecting pipe is arranged on the outside of the concentration tank, and its two ends are respectively connected to the upper and lower ends of the concentration tank. The connecting pipe is connected to the exhaust pipe. Two steam regulating pressure reducing valves are provided, and one of the steam regulating pressure reducing valves is connected to the exhaust pipe.

[0020] By adopting the above technical solution, the pressure control mechanism is used to control the air pressure environment in the concentration tank, so that the concentration tank is in a vacuum and low-pressure state, which reduces the boiling point of the liquid, reduces the damage of high temperature to heat-sensitive components, and maintains the high quality of the extract.

[0021] Optionally, the extraction process of the functional tea extract extraction device comprises the following steps: Step 1: Prepare the extract. Place the tea leaves in a net and pour the organic solvent into the tea leaves through a vertical pipe until the organic solvent completely submerges the tea leaves. Control the temperature at 80°C and soak for 2-3 hours. During the soaking process, the shaking mechanism will work to make the tea leaves in the net float, fully contacting with the organic solvent and increasing the concentration of the extract. Step 2: Filtration and separation: After the soaking is completed, the extract passes through the filter to remove tea leaves and solid impurities, and enters the concentration tank from the connecting pipe; Step 3: Concentration and purification: The air pressure in the concentration tank is controlled by the pressure control mechanism, a certain vacuum degree is maintained in the concentrator, and the boiling point of the liquid is lowered so that evaporation can be carried out at a lower temperature. After the concentration is completed, it is discharged from the drain port.

[0022] By adopting the above technical solution and utilizing the reduced pressure concentration technology, the effective ingredients in tea, such as tea polyphenols and aroma substances, can be effectively retained, while reducing the damage to heat-sensitive components, improving the quality and stability of the extract, and preventing the tea leaves from clogging the connecting tube during extraction. After the extraction process, the tea leaves can be easily cleaned, which is convenient and efficient.

[0023] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The conveying path of the extract is shortened by superimposing and connecting the concentration tank and the soaking tank, which not only avoids the increase of impurity content in the extract during transportation, but also reduces the overall footprint of the extraction equipment, effectively reducing costs. The tea leaves are blocked in the screen mechanism by the screen mechanism, which is convenient for subsequent cleaning. The tea leaves in the screen mechanism can be shaken by the shaking mechanism, so that the tea leaves are fully contacted with the organic solvent. When the module is tossed to shake the tea leaves, the cleaning module simultaneously cleans the filter screen, ensuring the smooth flow of the extract and improving the quality of the extract. 2. The pressure control mechanism is used to control the low-pressure vacuum environment in the concentration tank. Through the reduced pressure concentration technology, the effective ingredients in the tea can be effectively retained, while reducing the damage to heat-sensitive ingredients, improving the quality and stability of the extract, and meeting people's usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of an extraction device for functional tea extract in this embodiment.

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of an extraction device for functional tea extract in this embodiment from another perspective.

[0026] Figure 3 This is a schematic diagram of the rear view structure of an extraction device for functional tea extract in this embodiment.

[0027] Figure 4 This is a partial cross-sectional structural schematic diagram of an extraction device for functional tea extract in this embodiment.

[0028] Figure 5 yes Figure 4 Enlarged structural diagram at point A in the middle.

[0029] Figure 6 This is a schematic diagram of a retaining screen structure of an extraction device for functional tea extract in this embodiment.

[0030] Description of reference numerals: 1. Bracket; 2. Concentration tank; 21. First tank cover; 22. Drain port; 23. Bottom pipe; 24. Connecting pipe; 25. Control valve; 3. Soaking tank; 31. Second tank cover; 32. Port cover; 4. Net retaining mechanism; 41. Bending edge ring; 42. Elastic rope; 43. Bag net; 44. Bending head; 5. Horizontal plate; 6. Shaking mechanism; 61. Waterproof cover; 62. Motor; 63. Rotating rod; 631. Scraper; 64. Gear set; 65. L-shaped rod; 66. Bottom sleeve; 67. Movable rod; 68. Support plate; 69. Special-shaped block; 7. Filter; 8. Pressure control mechanism; 81. Vacuum pump; 82. Steam regulating pressure reducing valve; 83. Connecting pipe. DETAILED DESCRIPTION

[0031] The following is combined with Figures 1-6 The present invention is described in further detail.

[0032] The embodiment of the present invention discloses an extraction device for functional tea extract and an extraction process thereof.

[0033] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Reference Figures 1-6 , an extraction device for functional tea extract, comprising: The bracket 1 is fixed to the ground and has an inclined surface at its top to facilitate the discharge of the concentrated liquid under the action of gravity; The concentrating tank 2 is fixedly connected to the inclined surface of the bracket 1. The top of the concentrating tank 2 is fixedly connected to the first tank cover 21. The first tank cover 21 is tightly connected to the concentrating tank 2 to ensure a low-pressure vacuum environment in the concentrating tank 2. The soaking tank 3 is fixedly connected to the top of the first tank cover 21 and is fixedly connected to the concentration tank 2 via a connecting pipe 24, through which the leaching liquid is quickly transported; The screen mechanism 4 is hung in the soaking tank 3 to restrict the tea leaves and prevent them from sticking to the bottom wall of the soaking tank 3 after extraction, which increases the difficulty of cleaning; The horizontal plate 5 is fixedly connected to the top of the connecting pipe 24 horizontally, providing a support point for the shaking mechanism 6 and does not hinder the flow of the extraction liquid; The shaking mechanism 6 is provided on the horizontal plate 5. The shaking mechanism 6 includes a toggle module for shaking the screen mechanism 4 and a cleaning module that is linked with the toggle module to ensure that the filter 7 is unobstructed; The filter screen 7 is detachably connected to the connecting pipe 24 to complete the filtration of the extract; The pressure control mechanism 8 is disposed outside the concentration tank 2 and communicated with the concentration tank 2 to control the pressure inside the concentration tank 2 .

[0035] Specifically, when the tea leaves are soaked to obtain the extract, the shaking mechanism 6 works, and the toggle module drives the screen mechanism 4 to float up and down, so that the tea leaves float and will not pile up, and are fully in contact with the organic solvent. During the floating process of the tea leaves, some fine tea leaves are broken into pieces, flow out of the screen mechanism 4 and are blocked by the filter 7. When the toggle module works, it drives the cleaning module to clean the filter 7 to prevent the broken tea leaves from blocking the filter 7 and affecting the flow of the extract. The extract enters the concentration tank 2 through the connecting pipe 24, and the pressure control mechanism 8 controls the pressure in the concentration tank 2, so that the extract is always in a low-pressure state during the concentration process.

[0036] Reference Figure 1 Specifically, in the embodiment of the present invention, the top of the soaking tank 3 is detachably connected to a second tank cover 31, the second tank cover 31 has a slot for accommodating the entry and exit of the baffle mechanism 4, and a port cover 32 is rotatably hinged outside the slot. The second tank cover 31 is also provided with a vertical direct pipe.

[0037] In the embodiment of the present invention, when adding materials, the port cover 32 is opened, the tea leaves are first poured into the soaking tank 3, and then the organic solvent (ethanol, acetone, etc.) is poured into the soaking tank 3 from the vertical pipe to ensure that the organic solvent completely submerges the tea leaves so that the organic solvent is in full contact with the tea leaves.

[0038] Reference Figure 4 and Figure 6 Specifically, in the embodiment of the present invention, the net blocking mechanism 4 includes a gathering edge ring 41, an elastic rope 42, a bag net 43 and a gathering head 44. The elastic rope 42 is partially gathered in the gathering edge ring 41, and its two ends pass through the gathering head 44. The gathering head 44 is arranged on the outside of the port cover 32, and the bag net 43 is arranged on the inside of the gathering edge ring 41. It should be noted that the inner wall of the soaking tank 3 is provided with a protrusion for hanging the gathering edge ring 41 to ensure the stability of the connection of the bag net 43.

[0039] In an embodiment of the present invention, when tea leaves are soaked in an organic solvent, the elastic rope 42 and the binding head 44 are located on the outside of the port cover 32. It should be noted that the gap between the port cover 32 and the second tank cover 31 is not enough for the binding head 44 to pass through, so the binding head 44 is positioned to further ensure the stability of the net 43.

[0040] Reference Figure 4 and Figure 5Specifically, in the embodiment of the present invention, the toggle module includes a waterproof cover 61, a motor 62 and a rotating rod 63. The waterproof cover 61 is fixedly connected to the bottom end of the horizontal plate 5, and the motor 62 is fixedly connected in the waterproof cover 61 to protect the motor 62 from contacting the extractant, thereby extending the service life of the motor 62. The rotating rod 63 passes through the horizontal plate 5 and the waterproof cover 61 and is rotatably connected to the two. A gear set 64 is provided between the output shaft of the motor 62 and the rotating rod 63. The top of the rotating rod 63 is fixedly connected to an L-shaped rod 65. At least two bottom sleeves 66 are fixedly connected to the bottom wall of the soaking tank 3. A movable rod 67 is movably connected to the bottom sleeve 66. The top of the movable rod 67 is rotatably hinged with a support plate 68. The bottom end of the support plate 68 is integrally fixedly connected to a special-shaped block 69 that abuts against the L-shaped rod 65. The top of the support plate 68 contacts the net 43, and the special-shaped block 69 presents a ring-shaped wave structure.

[0041] In the embodiment of the present invention, during the soaking process of tea leaves and organic solvent, the motor 62 drives the gear set 64 to rotate, thereby driving the rotating rod 63 to rotate, and the rotating rod 63 drives the L-shaped rod 65 to rotate. The L-shaped rod 65 abuts against the special-shaped block 69. As the position of the L-shaped rod 65 changes continuously, the support plate 68 fluctuates with the net 43, so that the tea leaves will not accumulate, but will be mixed and fully contacted with the organic solvent. The connection between the bottom sleeve 66, the movable rod 67 and the support plate 68 ensures the flexibility of the ups and downs of the support plate 68.

[0042] Reference Figure 4 and Figure 5 Specifically, in an embodiment of the present invention, the cleaning module includes a scraper 631, which is fixedly connected to the outer wall of the bottom of the rotating rod 63, and the bottom of the scraper 631 is in contact with the filter 7. The control valve 25 is detachably connected to the connecting pipe 24, and the position of the control valve 25 is lower than the filter 7.

[0043] In the embodiment of the present invention, during the soaking process, the scraper 631 rotates synchronously with the rotating rod 63 to scrape the residue accumulated on the surface of the filter 7, leaving a flow channel for the leachate. The control valve 25 controls the discharge of the leachate and prevents the gas in the concentration tank 2 from overflowing.

[0044] Reference Figure 1-Figure 3 Specifically, in the embodiment of the present invention, a drain port 22 and a bottom pipe 23 are fixedly connected to the outer wall of the concentration tank 2 , and the bottom pipe 23 is connected to the outer bottom of the concentration tank 2 .

[0045] In the embodiment of the present invention, the drain port 22 and the bottom pipe 23 can both serve as drain pipes, one as the main pipe and the other as the auxiliary pipe, thereby improving the fault tolerance of the device.

[0046] Reference Figure 1-Figure 4Specifically, in the embodiment of the present invention, the pressure control mechanism 8 includes a vacuum pump 81, a steam regulating pressure reducing valve 82 and a connecting pipe 83. The vacuum pump 81 is fixedly connected to the bracket 1. The connecting pipe 83 is arranged on the outside of the concentration tank 2, and its two ends are respectively connected to the upper and lower ends of the concentration tank 2. The connecting pipe 83 is connected to the exhaust pipe. Two steam regulating pressure reducing valves 82 are provided, and one of the steam regulating pressure reducing valves 82 is connected to the exhaust pipe.

[0047] In the embodiment of the present invention, the steam regulating pressure reducing valve 82 adjusts the flow rate of steam, thereby controlling the pressure in the concentration tank 2, so that the pressure in the concentration tank 2 is maintained within a certain range, ensuring that the extract is concentrated into a high-quality tea extract. When the air pressure is too high, the exhaust pipe is used to exhaust air to accelerate the reduction of the air pressure.

[0048] Reference Figures 1-6 Specifically, in an embodiment of the present invention, an extraction process of an extraction device for a functional tea extract comprises the following steps: Step 1: Prepare the extract. Place the tea leaves in the net 43 and pour the organic solvent into the tea leaves from the vertical pipe until the organic solvent completely submerges the tea leaves. Control the temperature at 80°C and soak for 2-3 hours. During the soaking process, the shaking mechanism 6 operates to make the tea leaves in the net 43 float and fully contact with the organic solvent, thereby increasing the concentration of the extract. Step 2: Filtration and separation: After the soaking is completed, the extract passes through the filter 7 to remove tea leaves and solid impurities, and enters the concentration tank 2 through the connecting pipe 24; Step 3: Concentration and purification: The pressure in the concentration tank 2 is controlled by the pressure control mechanism 8, a certain vacuum degree is maintained in the concentrator, and the boiling point of the liquid is reduced so that evaporation can be carried out at a lower temperature. After the concentration is completed, the liquid is discharged from the drain port 22.

[0049] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. An extraction device for functional tea extract, characterized in that, include: A bracket (1) is fixed to the ground and has an inclined surface at its top; A concentration tank (2) is fixedly connected to the inclined surface of the bracket (1), and a first tank cover (21) is fixedly connected to the top of the concentration tank (2); A soaking tank (3) is fixedly connected to the top of the first tank cover (21) and is fixedly connected to the concentration tank (2) via a connecting pipe (24); A screen mechanism (4) is suspended in the soaking tank (3); A horizontal plate (5) fixedly connected horizontally to the top end of the connecting pipe (24); A shaking mechanism (6) is arranged on the transverse plate (5), and the shaking mechanism (6) includes a toggle module for shaking the screen blocking mechanism (4) and a cleaning module that is linked to the toggle module to ensure that the filter screen (7) is unobstructed; A filter screen (7) detachably connected to the connecting pipe (24); A pressure control mechanism (8) is arranged outside the concentration tank (2) and is in communication with the concentration tank (2).

2. The extraction device for functional tea extract according to claim 1, characterized in that: The top of the soaking tank (3) is detachably connected to a second tank cover (31) provided thereon. The second tank cover (31) has a slot for accommodating the entry and exit of the retaining net mechanism (4). A port cover (32) is rotatably hinged outside the slot. The second tank cover (31) is also provided with a vertical direct pipe.

3. The extraction device for functional tea extract according to claim 1, characterized in that: The net blocking mechanism (4) comprises a gathering edge ring (41), an elastic rope (42), a net (43) and a gathering head (44); the elastic rope (42) is partially gathered in the gathering edge ring (41), and both ends thereof pass through the gathering head (44); the gathering head (44) is arranged on the outside of the port cover (32), and the net (43) is arranged on the inside of the gathering edge ring (41).

4. The extraction device for functional tea extract according to claim 1, characterized in that: The toggle module comprises a waterproof cover (61), a motor (62) and a rotating rod (63), wherein the waterproof cover (61) is fixedly connected to the bottom end of the horizontal plate (5), the motor (62) is fixedly connected inside the waterproof cover (61), the rotating rod (63) passes through the horizontal plate (5) and the waterproof cover (61) and is rotatably connected to the two, a gear set (64) is provided between the output shaft of the motor (62) and the rotating rod (63), the top end of the rotating rod (63) is fixedly connected to an L-shaped rod (65), the inner bottom wall of the soaking tank (3) is fixedly connected to at least two bottom sleeves (66), the bottom sleeve (66) is movably connected to a movable rod (67), the top end of the movable rod (67) is rotatably hinged to a supporting plate (68), the bottom end of the supporting plate (68) is integrally fixedly connected to a special-shaped block (69) abutting against the L-shaped rod (65), and the top end of the supporting plate (68) is in contact with the bag net (43).

5. The extraction device for functional tea extract according to claim 1, characterized in that: The cleaning module comprises a scraper (631), the scraper (631) being fixedly connected to the outer wall of the bottom of the rotating rod (63), and the bottom of the scraper (631) being in contact with the filter (7).

6. The extraction device for functional tea extract according to claim 5, characterized in that: The connecting pipe (24) is detachably connected to a control valve (25), and the position of the control valve (25) is lower than the filter screen (7).

7. The extraction device for functional tea extract according to claim 1, characterized in that: The outer wall of the concentration tank (2) is fixedly connected to a drain port (22) and a bottom pipe (23), and the bottom pipe (23) is connected to the outer bottom of the concentration tank (2).

8. The extraction device for functional tea extract according to claim 1, characterized in that: The pressure control mechanism (8) comprises a vacuum pump (81), a steam regulating pressure reducing valve (82) and a connecting pipe (83). The vacuum pump (81) is fixedly connected to the bracket (1). The connecting pipe (83) is arranged outside the concentration tank (2), and its two ends are respectively connected to the upper and lower ends of the concentration tank (2). The connecting pipe (83) is connected to an exhaust pipe. Two steam regulating pressure reducing valves (82) are provided, and one of the steam regulating pressure reducing valves (82) is connected to the exhaust pipe.

9. The extraction process of the functional tea extract extraction device according to claim 1, characterized in that: The steps include: Step 1: Prepare the extract, place the tea leaves in the net (43), pour the organic solvent into the vertical pipe so that the organic solvent completely submerges the tea leaves, control the temperature at 80°C, and soak for 2-3 hours. During the soaking process, the shaking mechanism (6) works to make the tea leaves in the net (43) float and fully contact with the organic solvent, thereby increasing the concentration of the extract; Step 2: Filtration and separation: After the soaking is completed, the extract passes through the filter (7) to remove tea leaves and solid impurities, and enters the concentration tank (2) through the connecting pipe (24); Step 3: Concentration and purification: The pressure in the concentration tank (2) is controlled by the pressure control mechanism (8), a certain vacuum is maintained in the concentrator, and the boiling point of the liquid is lowered, so that evaporation can be carried out at a lower temperature. After the concentration is completed, it is discharged from the drain port (22).

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